DE1191879B - Electrical connector element - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

H02f

German class: 21c-22

Number: 1191879

File number: B 53329 VIII d / 21 c

Filing date: May 22, 1959

Opening day: April 29, 1965

The invention relates to an electrical connector element with a plug pin formed, detachably arranged in an insulating metal contact body, which in In the longitudinal direction one behind the other a front contact part intended to engage in a mating contact, a central contact part and a rear contact part serving to receive the connecting conductor has, furthermore with a arranged on the circumference of the contact body, against longitudinal displacement Spring element secured by protruding parts to hold the connector element in the socket, wherein the middle contact part of the contact body has a front flange, a first area with reduced diameter, a second area with larger diameter and has a rear flange.

There is already a contact element designed as a socket known, which on its top with two from the wall of the contact element sheared out resilient locking tongues is provided which together with a rear stop, fix the socket in an insulating material socket. The material of the contact element should meet two requirements as far as possible: On the one hand, it should be low gen have specific resistance to ensure good current transfer; on the other hand it should be characterized by good suspension properties, so that the resilient locking tongues also always after multiple installation and removal of the contact element from the insulating material socket return properly to their detent position. In practice, however, it has now been shown that this It is difficult to meet both requirements with one and the same material. It must therefore be a Compromise can be chosen, which makes the use of the known contact element impossible in cases makes, in which it is either due to particularly good electrical properties or to one particularly high elasticity of the locking tongues is important.

In order to avoid these shortcomings, an electrical connector element is therefore still available developed, in which on the circumference of the contact body a against longitudinal displacement by protruding Parts secured spring element for holding the connector element in the insulating material socket is provided. In this known embodiment, the spring element is an annularly closed plastic sleeve formed, which also encloses the rear part of the contact body. With this well-known Execution, the connection with the connecting conductor must first be established before the Electrical connector element

Applicant:

Burndy Corporation,
Norwalk, Conn. (V. St. A.)

Representative:

Dipl.-Ing. R. Beetz, patent attorney,

Munich 22, Steinsdorfstr. 10

Named as inventor:
Michael Lazar, White Plains, NY;
Frederick J. Rudermann, New Rochelle, NY
(V. St. A.)

Claimed priority:

V. St. ν. America May 29, 1958 (738 881)

Spring element can be applied to the contact body. The sliding of the spring element on the contact body as well as the loosening prepares in the known design as well as the pulling out of the whole connector element from the insulating material socket considerable difficulties. Another disadvantage of the known arrangement is the relatively large diameter of the connector element.

The invention is therefore based on the object of providing an electrical connector element of the initially introduced to develop the type mentioned, in which the explained deficiencies are avoided.

This object is achieved according to the invention in that the arranged on the central contact part The spring element is designed as a slotted sleeve and a number of resilient ones in its front part Has tongues, each of which has a radial projection with an inclined guide surface, that the rear end of the spring element on the rear flange of the contact body and the the front end rests against the front flange, the inner diameter of the spring element being the Corresponds to the diameter of the second region of the contact body, and the resilient tongues with their projections bent into the recess formed by the first area of the contact body when pressure is applied to the guide surfaces.

509 567/278

As the recess in the metallic contact body serving to accommodate the resilient tongues is provided, results in a particularly small outer diameter of the invention Connector element. After furthermore the spring element for receiving the connecting conductor serving rear contact part of the contact body is not covered, the connection between the contact body and the connecting conductor can also be made when the spring element is already attached to the contact body. This turns out to be in terms of assembly technology essential advantage. The release of the connector element according to the invention from the insulating material socket and the replacement of the spring element can be done without any noticeable material stress perform effortlessly.

An embodiment of the invention is illustrated in more detail in the drawing. It shows

F i g. 1 shows a longitudinal section through a plug connection with two plug connection elements according to the invention,

F i g. 2 shows a side view of a plug connection element according to the invention embodied as a plug pin in the pulled apart state.

The in F i g. 1 electrical connector shown consists of a plug part 10 and a Socket part 12. The plug part 10 contains an insulating material socket 14 which is provided with an inner bore 16 is provided. This inner bore 16 is somewhat offset in diameter in its central area. The narrowed bore part has a front stop surface 18 and a rear stop surface 20 on. In the bore 16, a plug connection element 22 is housed, which consists of a contact body 24 and a spring element 26 attached to this contact body 24.

The socket part 12 contains an insulating material socket 28 which is provided with an inner bore 30. This inner bore also has a narrowed central area with a front stop surface 32 and a rear stop surface 34. In the bore 30 there is a plug connection element designed as a socket 36 housed.

In Fig. 2 is an exploded view of the connector element 22, consisting of the Contact body 24 and the spring element 26, illustrated on an enlarged scale. The contact body 24 contains a pin-like front contact part 38, with a middle contact part a front flange 44, a first reduced diameter portion 50, a second portion 68 with a larger diameter and a rear flange 52, furthermore a rear contact part, which consists of a sleeve-shaped part 40 and intended for receiving the connecting conductor an insulating handle 42 composed. The transition between the front contact part 38 and the flange 44 is formed by a conical surface 46. Another conical transition surface 48 is provided between the first region 50 and the second region 68 of the central contact part. A viewing hole 54 is located behind the flange 52.

The spring element 26 is designed as a slotted sleeve and has a in its front area Number of resilient tongues 56, 58 and 60, each having a radial projection 62 with an oblique Wear guide surface 64. The resilient tongues 56, 58 and 60 unite at their rear end to a main part 66.

The spring element 26 is pushed onto the contact body 24 so that the rear End of the spring element 26 rests on the rear flange 52 of the contact body 24, while the the front end of the spring element 26 rests on the front flange 44. The dimensions are like this

ίο chosen that the inner diameter of the spring element 26 corresponds to the diameter of the second region 68 of the contact body 24 and the resilient tongues 56, 58 and 60 of the spring element 26 with their radial projections 62 in the through the first region 50 of the contact body 24 formed recess can be bent when on the inclined guide surfaces 64 of the resilient tongues a pressure is exerted.

The stripped end of the connection conductor 70 is

ao pushed into the sleeve-shaped part 40 of the contact body 24 and by pressing in a recess 72 set. In a similar way, the insulating material handle 42 is provided with recesses 74, by which the insulation of the connecting conductor 70 is determined.

During assembly, the plug connection element 22, consisting of the contact body 24 and the attached spring element 26, pushed into the bore 16 of the insulating material socket 14, wherein the conical surface 46 centers the male connector. On the inclined guide surfaces 64 of the spring element 26 is when pushed through the narrowed part of the bore 16 exerted a pressure in the radial direction so that the resilient tongues 56, 58 and 60 are pressed inward will. The rear flange 52 of the contact body 24 then rests against the rear stop surface 20 of the insulating material socket 14, the radial projections 62 of the resilient one snap at the same time Tongues 56, 58 and 60 of the spring element 26 behind the front stop surface 18 of the narrowed Bore part, so that the connector element 22 is properly fixed in the socket 14.

In order to release the plug connection element 22 from the insulating material socket 14, a tubular Tool pushed onto the connector element from the front, so that the resilient tongues 56, 58 and 60 of the spring element 26 are pressed inwards and release the stop surface 18. The plug connection element 22 can then be pulled out of the holder 14 towards the rear will.

Claims (1)

Claim: Electrical connector element with a connector designed as a pin, in a Detachably arranged metallic contact body in the longitudinal direction one behind the other a front contact part intended to engage in a mating contact, a middle contact part and a rear one serving to accommodate the connecting conductor Has contact part, furthermore with a arranged on the circumference of the contact body, against Longitudinal displacement secured by projecting parts spring element to hold the Plug connection element in the socket, wherein the middle contact part of the contact body a front flange, a first reduced diameter region, a second region having a larger diameter and a rear flange, characterized in that that the arranged on the central contact part spring element (26) is designed as a slotted sleeve and in his front part has a number of resilient tongues (56, 58, 60), each having a radial projection (62) with an inclined guide surface (64) that continues to carry the rear end of the Spring element on the rear flange (52) of the contact body (24) and the front end on front flange (44) rests, the inner diameter of the spring element being the diameter of the second region (68) of the contact body corresponds, and the resilient tongues with their projections in the recess formed by the first region (50) of the contact body be bent in when pressure is applied to the guide surfaces. Considered publications:
German Auslegeschrift No. 1 015 884,
014 620;
U.S. Patent Nos. 2,490,317, 2,689,337. 1 sheet of drawings 509 567/278 4.65 © Bundesdruckerei Berlin